28807773 has 16 divisors (see below), whose sum is σ = 39922176. Its totient is φ = 18457920.

The previous prime is 28807763. The next prime is 28807783. The reversal of 28807773 is 37770882.

It is an interprime number because it is at equal distance from previous prime (28807763) and next prime (28807783).

It is a de Polignac number, because none of the positive numbers 2^k-28807773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28807703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13615 + ... + 15587.

It is an arithmetic number, because the mean of its divisors is an integer number (2495136).

Almost surely, 2^28807773 is an apocalyptic number.

It is an amenable number.

28807773 is a deficient number, since it is larger than the sum of its proper divisors (11114403).

28807773 is a wasteful number, since it uses less digits than its factorization.

28807773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 28807773 is about 5367.2873036572. The cubic root of 28807773 is about 306.5513469732.

The spelling of 28807773 in words is "twenty-eight million, eight hundred seven thousand, seven hundred seventy-three".